Had this problem last year when mine fell off the bed!
Don;t know if you're aware but the screen is very pricey, £200 - £300.
I found it cheaper in the end to buy a second hand 5738 on e-bay. They come up from time to time.
To find a screen supplier try doing an aspire search, or other relevant terms, in the Helproom.
I know there is one, as one of our members gave me the reference but I can;t find it now.